Commit | Line | Data |
---|---|---|
c906108c | 1 | /* |
c5aa993b JM |
2 | ** tuiSource.c |
3 | ** This module contains functions for displaying source in the source window | |
4 | */ | |
c906108c SS |
5 | |
6 | #include "defs.h" | |
7 | #include <ctype.h> | |
8 | #include "symtab.h" | |
9 | #include "frame.h" | |
10 | #include "breakpoint.h" | |
c2c6d25f | 11 | #include "source.h" |
c906108c SS |
12 | |
13 | #include "tui.h" | |
14 | #include "tuiData.h" | |
15 | #include "tuiStack.h" | |
16 | #include "tuiSourceWin.h" | |
17 | #include "tuiSource.h" | |
18 | ||
19 | ||
c906108c SS |
20 | /***************************************** |
21 | ** EXTERNAL DATA DECLS ** | |
22 | ******************************************/ | |
23 | extern int current_source_line; | |
24 | extern struct symtab *current_source_symtab; | |
25 | ||
26 | ||
27 | /***************************************** | |
28 | ** STATIC LOCAL FUNCTIONS FORWARD DECLS ** | |
29 | ******************************************/ | |
30 | ||
a14ed312 | 31 | static struct breakpoint *_hasBreak (char *, int); |
c906108c SS |
32 | |
33 | ||
34 | /***************************************** | |
35 | ** STATIC LOCAL DATA ** | |
36 | ******************************************/ | |
37 | ||
38 | ||
39 | /***************************************** | |
40 | ** PUBLIC FUNCTIONS ** | |
41 | ******************************************/ | |
42 | ||
43 | /********************************* | |
44 | ** SOURCE/DISASSEM FUNCTIONS ** | |
45 | *********************************/ | |
46 | ||
47 | /* | |
c5aa993b JM |
48 | ** tuiSetSourceContent(). |
49 | ** Function to display source in the source window. | |
50 | */ | |
c906108c SS |
51 | TuiStatus |
52 | #ifdef __STDC__ | |
53 | tuiSetSourceContent ( | |
54 | struct symtab *s, | |
55 | int lineNo, | |
56 | int noerror) | |
57 | #else | |
58 | tuiSetSourceContent (s, lineNo, noerror) | |
59 | struct symtab *s; | |
60 | int lineNo; | |
61 | int noerror; | |
62 | #endif | |
63 | { | |
64 | TuiStatus ret = TUI_FAILURE; | |
65 | ||
66 | if (s != (struct symtab *) NULL && s->filename != (char *) NULL) | |
67 | { | |
68 | register FILE *stream; | |
69 | register int i, desc, c, lineWidth, nlines; | |
70 | register char *srcLine; | |
71 | ||
72 | if ((ret = tuiAllocSourceBuffer (srcWin)) == TUI_SUCCESS) | |
73 | { | |
74 | lineWidth = srcWin->generic.width - 1; | |
75 | /* | |
c5aa993b JM |
76 | ** Take hilite (window border) into account, when calculating |
77 | ** the number of lines | |
78 | */ | |
c906108c SS |
79 | nlines = (lineNo + (srcWin->generic.height - 2)) - lineNo; |
80 | desc = open_source_file (s); | |
81 | if (desc < 0) | |
82 | { | |
83 | if (!noerror) | |
84 | { | |
85 | char *name = alloca (strlen (s->filename) + 100); | |
86 | sprintf (name, "%s:%d", s->filename, lineNo); | |
87 | print_sys_errmsg (name, errno); | |
88 | } | |
89 | ret = TUI_FAILURE; | |
90 | } | |
91 | else | |
92 | { | |
93 | if (s->line_charpos == 0) | |
94 | find_source_lines (s, desc); | |
95 | ||
96 | if (lineNo < 1 || lineNo > s->nlines) | |
97 | { | |
98 | close (desc); | |
99 | printf_unfiltered ( | |
100 | "Line number %d out of range; %s has %d lines.\n", | |
101 | lineNo, s->filename, s->nlines); | |
102 | } | |
103 | else if (lseek (desc, s->line_charpos[lineNo - 1], 0) < 0) | |
104 | { | |
105 | close (desc); | |
106 | perror_with_name (s->filename); | |
107 | } | |
108 | else | |
109 | { | |
110 | register int offset, curLineNo, curLine, curLen, threshold; | |
111 | TuiGenWinInfoPtr locator = locatorWinInfoPtr (); | |
112 | /* | |
c5aa993b JM |
113 | ** Determine the threshold for the length of the line |
114 | ** and the offset to start the display | |
115 | */ | |
c906108c SS |
116 | offset = srcWin->detail.sourceInfo.horizontalOffset; |
117 | threshold = (lineWidth - 1) + offset; | |
118 | stream = fdopen (desc, FOPEN_RT); | |
119 | clearerr (stream); | |
120 | curLine = 0; | |
121 | curLineNo = | |
122 | srcWin->detail.sourceInfo.startLineOrAddr.lineNo = lineNo; | |
123 | if (offset > 0) | |
124 | srcLine = (char *) xmalloc ( | |
125 | (threshold + 1) * sizeof (char)); | |
126 | while (curLine < nlines) | |
127 | { | |
128 | TuiWinElementPtr element = (TuiWinElementPtr) | |
129 | srcWin->generic.content[curLine]; | |
130 | struct breakpoint *bp; | |
131 | ||
132 | /* get the first character in the line */ | |
133 | c = fgetc (stream); | |
134 | ||
135 | if (offset == 0) | |
136 | srcLine = ((TuiWinElementPtr) | |
137 | srcWin->generic.content[ | |
138 | curLine])->whichElement.source.line; | |
139 | /* Init the line with the line number */ | |
140 | sprintf (srcLine, "%-6d", curLineNo); | |
141 | curLen = strlen (srcLine); | |
142 | i = curLen - | |
143 | ((curLen / tuiDefaultTabLen ()) * tuiDefaultTabLen ()); | |
144 | while (i < tuiDefaultTabLen ()) | |
145 | { | |
146 | srcLine[curLen] = ' '; | |
147 | i++; | |
148 | curLen++; | |
149 | } | |
150 | srcLine[curLen] = (char) 0; | |
151 | ||
152 | /* | |
c5aa993b JM |
153 | ** Set whether element is the execution point and |
154 | ** whether there is a break point on it. | |
155 | */ | |
c906108c SS |
156 | element->whichElement.source.lineOrAddr.lineNo = |
157 | curLineNo; | |
158 | element->whichElement.source.isExecPoint = | |
159 | (strcmp (((TuiWinElementPtr) | |
160 | locator->content[0])->whichElement.locator.fileName, | |
161 | s->filename) == 0 | |
162 | && curLineNo == ((TuiWinElementPtr) | |
163 | locator->content[0])->whichElement.locator.lineNo); | |
164 | bp = _hasBreak (s->filename, curLineNo); | |
165 | element->whichElement.source.hasBreak = | |
166 | (bp != (struct breakpoint *) NULL && | |
167 | (!element->whichElement.source.isExecPoint || | |
168 | (bp->disposition != del || bp->hit_count <= 0))); | |
169 | if (c != EOF) | |
170 | { | |
171 | i = strlen (srcLine) - 1; | |
172 | do | |
173 | { | |
174 | if ((c != '\n') && | |
175 | (c != '\r') && (++i < threshold)) | |
176 | { | |
177 | if (c < 040 && c != '\t') | |
178 | { | |
179 | srcLine[i++] = '^'; | |
180 | srcLine[i] = c + 0100; | |
181 | } | |
182 | else if (c == 0177) | |
183 | { | |
184 | srcLine[i++] = '^'; | |
185 | srcLine[i] = '?'; | |
186 | } | |
187 | else | |
188 | { /* | |
c5aa993b JM |
189 | ** Store the charcter in the line |
190 | ** buffer. If it is a tab, then | |
191 | ** translate to the correct number of | |
192 | ** chars so we don't overwrite our | |
193 | ** buffer. | |
194 | */ | |
c906108c SS |
195 | if (c == '\t') |
196 | { | |
197 | int j, maxTabLen = tuiDefaultTabLen (); | |
198 | ||
199 | for (j = i - ( | |
200 | (i / maxTabLen) * maxTabLen); | |
201 | ((j < maxTabLen) && | |
202 | i < threshold); | |
203 | i++, j++) | |
204 | srcLine[i] = ' '; | |
205 | i--; | |
206 | } | |
207 | else | |
208 | srcLine[i] = c; | |
209 | } | |
210 | srcLine[i + 1] = 0; | |
211 | } | |
212 | else | |
213 | { /* | |
c5aa993b JM |
214 | ** if we have not reached EOL, then eat |
215 | ** chars until we do | |
216 | */ | |
c906108c SS |
217 | while (c != EOF && c != '\n' && c != '\r') |
218 | c = fgetc (stream); | |
219 | } | |
220 | } | |
221 | while (c != EOF && c != '\n' && c != '\r' && | |
222 | i < threshold && (c = fgetc (stream))); | |
223 | } | |
224 | /* Now copy the line taking the offset into account */ | |
225 | if (strlen (srcLine) > offset) | |
226 | strcpy (((TuiWinElementPtr) srcWin->generic.content[ | |
227 | curLine])->whichElement.source.line, | |
228 | &srcLine[offset]); | |
229 | else | |
230 | ((TuiWinElementPtr) | |
231 | srcWin->generic.content[ | |
232 | curLine])->whichElement.source.line[0] = (char) 0; | |
233 | curLine++; | |
234 | curLineNo++; | |
235 | } | |
236 | if (offset > 0) | |
237 | tuiFree (srcLine); | |
238 | fclose (stream); | |
239 | srcWin->generic.contentSize = nlines; | |
240 | ret = TUI_SUCCESS; | |
241 | } | |
242 | } | |
243 | } | |
244 | } | |
245 | return ret; | |
246 | } /* tuiSetSourceContent */ | |
247 | ||
248 | ||
249 | /* elz: this function sets the contents of the source window to empty | |
250 | except for a line in the middle with a warning message about the | |
251 | source not being available. This function is called by | |
252 | tuiEraseSourceContents, which in turn is invoked when the source files | |
c5aa993b | 253 | cannot be accessed */ |
c906108c SS |
254 | |
255 | void | |
256 | #ifdef __STDC__ | |
257 | tuiSetSourceContentNil ( | |
258 | TuiWinInfoPtr winInfo, | |
259 | char *warning_string) | |
260 | #else | |
261 | tuiSetSourceContentNil (winInfo, warning_string) | |
262 | TuiWinInfoPtr winInfo; | |
263 | char *warning_string; | |
264 | #endif | |
265 | { | |
266 | int lineWidth; | |
267 | int nLines; | |
268 | int curr_line = 0; | |
269 | ||
270 | lineWidth = winInfo->generic.width - 1; | |
271 | nLines = winInfo->generic.height - 2; | |
272 | ||
273 | /* set to empty each line in the window, except for the one | |
c5aa993b | 274 | which contains the message */ |
c906108c SS |
275 | while (curr_line < winInfo->generic.contentSize) |
276 | { | |
277 | /* set the information related to each displayed line | |
c5aa993b JM |
278 | to null: i.e. the line number is 0, there is no bp, |
279 | it is not where the program is stopped */ | |
c906108c SS |
280 | |
281 | TuiWinElementPtr element = | |
282 | (TuiWinElementPtr) winInfo->generic.content[curr_line]; | |
283 | element->whichElement.source.lineOrAddr.lineNo = 0; | |
284 | element->whichElement.source.isExecPoint = FALSE; | |
285 | element->whichElement.source.hasBreak = FALSE; | |
286 | ||
c5aa993b | 287 | /* set the contents of the line to blank */ |
c906108c SS |
288 | element->whichElement.source.line[0] = (char) 0; |
289 | ||
290 | /* if the current line is in the middle of the screen, then we want to | |
c5aa993b JM |
291 | display the 'no source available' message in it. |
292 | Note: the 'weird' arithmetic with the line width and height comes from | |
293 | the function tuiEraseSourceContent. We need to keep the screen and the | |
294 | window's actual contents in synch */ | |
c906108c SS |
295 | |
296 | if (curr_line == (nLines / 2 + 1)) | |
297 | { | |
298 | int i; | |
299 | int xpos; | |
300 | int warning_length = strlen (warning_string); | |
301 | char *srcLine; | |
302 | ||
303 | srcLine = element->whichElement.source.line; | |
304 | ||
305 | if (warning_length >= ((lineWidth - 1) / 2)) | |
306 | xpos = 1; | |
307 | else | |
308 | xpos = (lineWidth - 1) / 2 - warning_length; | |
309 | ||
310 | for (i = 0; i < xpos; i++) | |
311 | srcLine[i] = ' '; | |
312 | ||
313 | sprintf (srcLine + i, "%s", warning_string); | |
314 | ||
315 | for (i = xpos + warning_length; i < lineWidth; i++) | |
316 | srcLine[i] = ' '; | |
317 | ||
318 | srcLine[i] = '\n'; | |
319 | ||
320 | } /* end if */ | |
321 | ||
322 | curr_line++; | |
323 | ||
c5aa993b | 324 | } /* end while */ |
c906108c | 325 | |
c5aa993b | 326 | } /*tuiSetSourceContentNil */ |
c906108c SS |
327 | |
328 | ||
329 | ||
330 | ||
331 | /* | |
c5aa993b JM |
332 | ** tuiShowSource(). |
333 | ** Function to display source in the source window. This function | |
334 | ** initializes the horizontal scroll to 0. | |
335 | */ | |
c906108c SS |
336 | void |
337 | #ifdef __STDC__ | |
338 | tuiShowSource ( | |
339 | struct symtab *s, | |
340 | Opaque line, | |
341 | int noerror) | |
342 | #else | |
343 | tuiShowSource (s, line, noerror) | |
344 | struct symtab *s; | |
345 | Opaque line; | |
346 | int noerror; | |
347 | #endif | |
348 | { | |
349 | srcWin->detail.sourceInfo.horizontalOffset = 0; | |
350 | m_tuiShowSourceAsIs (s, line, noerror); | |
351 | ||
352 | return; | |
353 | } /* tuiShowSource */ | |
354 | ||
355 | ||
356 | /* | |
c5aa993b JM |
357 | ** tuiSourceIsDisplayed(). |
358 | ** Answer whether the source is currently displayed in the source window. | |
359 | */ | |
c906108c SS |
360 | int |
361 | #ifdef __STDC__ | |
362 | tuiSourceIsDisplayed ( | |
363 | char *fname) | |
364 | #else | |
365 | tuiSourceIsDisplayed (fname) | |
366 | char *fname; | |
367 | #endif | |
368 | { | |
369 | return (srcWin->generic.contentInUse && | |
370 | (strcmp (((TuiWinElementPtr) (locatorWinInfoPtr ())-> | |
371 | content[0])->whichElement.locator.fileName, fname) == 0)); | |
372 | } /* tuiSourceIsDisplayed */ | |
373 | ||
374 | ||
375 | /* | |
c5aa993b JM |
376 | ** tuiVerticalSourceScroll(). |
377 | ** Scroll the source forward or backward vertically | |
378 | */ | |
c906108c SS |
379 | void |
380 | #ifdef __STDC__ | |
381 | tuiVerticalSourceScroll ( | |
382 | TuiScrollDirection scrollDirection, | |
383 | int numToScroll) | |
384 | #else | |
385 | tuiVerticalSourceScroll (scrollDirection, numToScroll) | |
386 | TuiScrollDirection scrollDirection; | |
387 | int numToScroll; | |
388 | #endif | |
389 | { | |
390 | if (srcWin->generic.content != (OpaquePtr) NULL) | |
391 | { | |
392 | int line; | |
393 | Opaque addr; | |
394 | struct symtab *s; | |
395 | TuiWinContent content = (TuiWinContent) srcWin->generic.content; | |
396 | ||
397 | if (current_source_symtab == (struct symtab *) NULL) | |
398 | s = find_pc_symtab (selected_frame->pc); | |
399 | else | |
400 | s = current_source_symtab; | |
401 | ||
402 | if (scrollDirection == FORWARD_SCROLL) | |
403 | { | |
404 | line = content[0]->whichElement.source.lineOrAddr.lineNo + | |
405 | numToScroll; | |
406 | if (line > s->nlines) | |
c5aa993b JM |
407 | /*line = s->nlines - winInfo->generic.contentSize + 1; */ |
408 | /*elz: fix for dts 23398 */ | |
c906108c SS |
409 | line = content[0]->whichElement.source.lineOrAddr.lineNo; |
410 | } | |
411 | else | |
412 | { | |
413 | line = content[0]->whichElement.source.lineOrAddr.lineNo - | |
414 | numToScroll; | |
415 | if (line <= 0) | |
416 | line = 1; | |
417 | } | |
418 | tuiUpdateSourceWindowAsIs (srcWin, s, (Opaque) line, FALSE); | |
419 | } | |
420 | ||
421 | return; | |
422 | } /* tuiVerticalSourceScroll */ | |
423 | ||
424 | ||
425 | /***************************************** | |
426 | ** STATIC LOCAL FUNCTIONS ** | |
427 | ******************************************/ | |
428 | ||
429 | /* | |
c5aa993b JM |
430 | ** _hasBreak(). |
431 | ** Answer whether there is a break point at the input line in | |
432 | ** the source file indicated | |
433 | */ | |
c906108c SS |
434 | static struct breakpoint * |
435 | #ifdef __STDC__ | |
436 | _hasBreak ( | |
437 | char *sourceFileName, | |
438 | int lineNo) | |
439 | #else | |
440 | _hasBreak (sourceFileName, lineNo) | |
441 | char *sourceFileName; | |
442 | int lineNo; | |
443 | #endif | |
444 | { | |
445 | struct breakpoint *bpWithBreak = (struct breakpoint *) NULL; | |
446 | struct breakpoint *bp; | |
447 | extern struct breakpoint *breakpoint_chain; | |
448 | ||
449 | ||
450 | for (bp = breakpoint_chain; | |
451 | (bp != (struct breakpoint *) NULL && | |
452 | bpWithBreak == (struct breakpoint *) NULL); | |
453 | bp = bp->next) | |
454 | if ((strcmp (sourceFileName, bp->source_file) == 0) && | |
455 | (lineNo == bp->line_number)) | |
456 | bpWithBreak = bp; | |
457 | ||
458 | return bpWithBreak; | |
459 | } /* _hasBreak */ |